After developer Ustwo Games released a $2 expansion for its premium mobile game, Monument Valley, angry players flooded the game's listing with 1-star reviews on Apple and Android app stores. Now, the developers have shared their thoughts on Twitter.

A new expansion for Hearthstone: Heroes of WarCraft was announced today during the opening ceremony for BlizzCon 2014. Called Goblins Vs. Gnomes, Blizzard promises the expansion will feature "explosive gameplay" elements.